Form 4 Filing for CME Group Inc.

This filing details transactions by Suzanne Sprague, COO & Global Head of Clearing at CME Group Inc. On September 15, 2026, Sprague acquired 2864 shares of Common Stock Class A under a restricted stock grant (vesting over four years). In subsequent transactions on the same day, Sprague disposed of shares totaling 844 (249 + 275 + 320) at a price of $275.09 per share, likely to cover tax withholdings associated with the restricted stock vesting, as indicated by footnote F2. An additional disposition of 308 shares occurred on September 16, 2026, at $272.46 per share. Following these transactions, Sprague